I understand how you feel, it's tough when you see others are getting an advantage. Like I said previously,it may or may not help them. I am unsure if you have reached the point in nursing school
where all the answers are correct and you must pick the most
correct. Here a study guide will not help anyone as pure facts alone will not give you the answer, critical thinking skills must now take precedence.If you haven't reached this point you will.
I remember in nursing school , we would sometimes receive filled out study guides from fellow nursing students. Personally it never worked because I has to study and dissect the information for myself.Our school was so small and close knit, that we always knew who said what.I would personally let it go.
To reiterate what tsm007 said you're already on your way to doing great, A's are hard to come by so congrats!!!!!